Commercial Floriculture, Rose Greenhouse & Packhouse Export ERP: Stem Grading, Cold-Chain Precooling, Phytosanitary KEPHIS Integration, and Dutch Auction Consignment Accounting

Kenya is the leading exporter of cut roses and summer flowers to the European Union, the UK, and the Middle East—centered around Naivasha, Nakuru, Mt. Kenya, Timau, Thika, and Eldoret. Yet flower farms lose millions of shillings annually between the greenhouse bed and the Amsterdam auction clock due to untracked packhouse stem rejection, cold-chain temperature spikes that cause Botrytis in transit, air-freight volumetric weight under-utilization, and complex multi-currency auction consignment deductions.

At devManue, we build bespoke Commercial Floriculture, Greenhouse & Packhouse Export ERP systems that track every stem from greenhouse block/bed cutting through hydration, length/head-size grading, sleeve bunching, forced-air precooling, JKIA cold-truck dispatch, and final EUR/GBP/USD settlement reconciliation.

1. Greenhouse Block-to-Packhouse Stem Traceability & Bunching Productivity

• Greenhouse Bed & Variety Flush Forecasting: Track stem yield per square meter (stems/m²/year) across every variety (e.g., Madam Red, Athena, Rhodos, Upper Class), greenhouse block, and hydroponic/soil bed, correlating fertigation EC/pH and IPM spray cycles against exportable grade-out percentages.
• Packhouse Stem-Length & Head-Size Barcode Grading: As graders sort stems into 40cm, 50cm, 60cm, 70cm, and 80cm lengths and bunch them into 10-stem or 20-stem wraps, wrist/table barcode scanners credit the exact grader for piece-rate payroll while logging reject reasons (bent neck, thrips, powdery mildew, mechanical damage).
• Forced-Air Precooling & Box Volumetric Optimization: Before standard SF1/SF2/SF3 export boxes are strapped onto air-freight skids, pulp temperature probes must confirm cooling to 2.0°C – 4.0°C to prevent condensation and Botrytis cinerea during the flight to Schiphol or Liege.

2. Air-Freight Chargeable Weight & Auction Clock Net-Back Engine

Because air freight from Nairobi (NBO) to Europe is billed at $1.80–$2.60/kg based on the higher of gross weight or volumetric weight (L × W × H cm / 6000), our packhouse engine optimizes stems-per-box density and reconciles auction clock gross sales against commission, sleeve/trolley fees, and freight charges:

from decimal import Decimal, ROUND_HALF_UP

class FloricultureExportSettlementEngine:
    """
    Computes air-freight volumetric vs gross chargeable weight and net farm-gate
    return per stem from European auction clock or direct retail programs.
    """
    @staticmethod
    def compute_stem_netback_eur(
        total_stems_exported: int,
        gross_auction_revenue_eur: Decimal,
        auction_commission_pct: Decimal,
        lot_handling_and_trolley_eur: Decimal,
        chargeable_airfreight_kg: Decimal,
        airfreight_rate_per_kg_eur: Decimal,
    ) -> dict:
        commission_eur = (gross_auction_revenue_eur * (auction_commission_pct / Decimal("100"))).quantize(
            Decimal("0.01"), rounding=ROUND_HALF_UP
        )
        total_freight_eur = (chargeable_airfreight_kg * airfreight_rate_per_kg_eur).quantize(
            Decimal("0.01"), rounding=ROUND_HALF_UP
        )
        net_farmgate_eur = (
            gross_auction_revenue_eur - commission_eur - lot_handling_and_trolley_eur - total_freight_eur
        ).quantize(Decimal("0.01"), rounding=ROUND_HALF_UP)
        netback_per_stem_eur = (net_farmgate_eur / Decimal(max(total_stems_exported, 1))).quantize(
            Decimal("0.0001"), rounding=ROUND_HALF_UP
        )
        return {
            "gross_auction_revenue_eur": gross_auction_revenue_eur,
            "total_deductions_and_freight_eur": commission_eur + lot_handling_and_trolley_eur + total_freight_eur,
            "net_farmgate_eur": net_farmgate_eur,
            "netback_per_stem_eur": netback_per_stem_eur,
        }

3. Chemical Spray Pre-Harvest Intervals (PHI) & MPS / GlobalG.A.P. Audits

Every pesticide or biological control application in a greenhouse block automatically enforces a mandatory Re-Entry Interval (REI) and Pre-Harvest Interval (PHI) lock, generating instant MPS-ABC, Kenya Flower Council (KFC Silver/Gold), and GlobalG.A.P. audit reports.